How to protect payment terminals against malware

Svetozar Yakhontov, Director of Business Development at StarForce Technologies, has published an article about payment terminals and cash registers security. He raises a question of antivirus software for this type of devices. It turns out that sometimes it is stupid to expect the system will work the same in the test environment and in the field mostly because of .the notorious human factor. Svetozar in his post describes underwater stones which can be met when you use a software integrity system, and specifies requirements for those who just thinking about the implementation of the software control system. We only hope that it is not a post incidental need.